Why is he so often absent on Thursdays?

他为什么经常星期四缺席？

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She's going to come back every so often.

她会偶尔回来一下。

《柯林斯英汉双解大词典》

You're bound to mistime a tackle every so often.

你肯定会有错估进攻时机的时候。

《柯林斯英汉双解大词典》

I have seen her fix all these things so often that I can do it just the way she does.

VOA: special.2009.07.04

That they exist is a proof that American ideals are not the tawdry pretenses they are so often accused of being.

或许这类人的存在,正证明了美国式理想并非无可挑剔,或者说它也在经受着现实的折磨，“

耶鲁公开课 - 1945年后的美国小说课程节选

So that's often a big restriction that a lot of dorms will put. But here, here at law school,

这是许多宿舍明令禁止的。但是在法学院，

关于宿舍制度 - SpeakingMax英语口语达人

But it is the first time that the frontrunner was put on the defensive so often.

NPR: Clinton No Longer Unscathed Front-Runner

Some recent research suggests that, by thinking about death so often, the Bhutanese may be on to something.

BBC: Bhutan��s dark secret to happiness

Every so often, Rose said he still bets on other sports, but not on baseball.

WSJ: Pete Rose Works Full-Time Selling His Signature in Las Vegas